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Quality Control Results <br /> Client: ARCADIS Job Number: 720-26676-1 <br /> Lab Control Sample/ Method: 8260B <br /> Lab Control Sample Duplicate Recovery Report- Batch: 720-68279 Preparation: 5030B <br /> LCS Lab Sample ID: LCS 720-68279/5 Analysis Batch: 720-68279 Instrument ID: HP4 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 03241023.D <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 03/24/2010 2007 Final Weight/Volume: 10 mL <br /> Date Prepared: 03/24/2010 2007 <br /> LCSD Lab Sample ID: LCSD 720-68279/6 Analysis Batch: 720-68279 Instrument ID: HP4 <br /> Client Matrix: Water Prep Batch: N/A Lab File ID: 03241024.D <br /> Dilution: 1.0 Units: ug/L Initial Weight/Volume: 10 mL <br /> Date Analyzed: 03/24/2010 2039 Final Weight/Volume: 10 mL <br /> Date Prepared: 03/24/2010 2039 <br /> %Rec. <br /> Analyte LCS LCSD Limit RPD RPD Limit LCS Qual LCSD Qual <br /> 1,1-Dichloroethene 97 99 64-128 1 20 <br /> cis-1,2-Dichloroethene 110 111 70-130 1 20 <br /> trans-1,2-Dichloroethene 89 90 82-114 0 20 <br /> 1,2-Dichloropropane 98 100 70-130 2 20 <br /> cis-1,3-Dichloropropene 106 108 70-130 2 20 <br /> trans-1,3-Dichloropropene 101 104 70-130 3 20 <br /> Ethylbenzene 103 106 86-135 3 20 <br /> Hexachlorobutadiene 116 114 70-130 1 20 <br /> 2-Hexanone 91 97 60-164 7 20 <br /> Isopropyl benzene 89 91 70-130 2 20 <br /> 4-Isopropyltoluene 110 111 70-130 1 20 <br /> Methylene Chloride 98 98 73-147 0 20 <br /> 4-Methyl-2-pentanone(MIBK) 96 100 63-165 3 20 <br /> Naphthalene 105 110 78-122 5 20 <br /> N-Propylbenzene 103 106 70-130 3 20 <br /> Styrene 111 114 70-130 2 20 <br /> 1,1,1,2-Tetrachloroethane 110 112 70-130 2 20 <br /> 1,1,2,2-Tetrachloroethane 98 103 70-130 5 20 <br /> Tetrachloroethene 103 103 70-130 0 20 <br /> Toluene 95 97 83-129 2 20 <br /> 1,2,3-Trichlorobenzene 118 120 70-130 2 20 <br /> 1,2,4-Trichlorobenzene 115 116 70-130 1 20 <br /> 1,1,1-Trichloroethane 109 110 70-130 1 20 <br /> 1,1,2-Trichloroethane 101 102 86-135 2 20 <br /> Trichloroethene 104 105 70-130 1 20 <br /> Trichlorofluoromethane 107 108 70-130 0 20 <br /> 1,2,3-Trichloropropane 103 105 84-121 2 20 <br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 98 99 42-162 1 20 <br /> 1,2,4-Trimethylbenzene 110 113 70-132 2 20 <br /> 1,3,5-Trimethylbenzene 110 113 70-130 3 20 <br /> Vinyl acetate 90 92 58-145 2 20 <br /> Vinyl chloride 90 89 65-156 1 20 <br /> Calculations are performed before rounding to avoid round-off errors in calculated results. <br /> TestAmerica San Francisco Page 109 Of 130 <br />